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Glam Journal

What are HDL and LDL and their functions

Author

Andrew Henderson

Updated on April 18, 2026

HDL helps rid your body of excess cholesterol so it’s less likely to end up in your arteries. LDL is called “bad cholesterol” because it takes cholesterol to your arteries, where it may collect in artery walls. Too much cholesterol in your arteries may lead to a buildup of plaque known as atherosclerosis.

What is the function of LDL?

Low-density lipoproteins (LDLs) transport cholesterol from its site of synthesis in the liver to the various tissues and body cells, where it is separated from the lipoprotein and is used by the cell.

What is LDL and HDL and how do they impact your body?

LDL , the “bad” cholesterol, transports cholesterol particles throughout your body. LDL cholesterol builds up in the walls of your arteries, making them hard and narrow. High-density lipoprotein (HDL). HDL , the “good” cholesterol, picks up excess cholesterol and takes it back to your liver.

What is the difference between HDL and LDL?

HDL (high density lipoprotein) cholesterol is known as “good” cholesterol. HDL takes the “bad,” LDL (low density lipoprotein) cholesterol out of your blood and keeps it from building up in your arteries.

How do LDL and HDL differ in structure and function?

As a general rule, HDL is considered “good” cholesterol, while LDL is considered “bad.” This is because HDL carries cholesterol to your liver, where it can be removed from your bloodstream before it builds up in your arteries. LDL, on the other hand, takes cholesterol directly to your arteries.

What is good HDL and LDL?

According to Michos, an ideal LDL cholesterol level should be less than 70 mg/dl, and a woman’s HDL cholesterol level ideally should be close to 50 mg/dl. Triglycerides should be less than 150 mg/dl. As Michos notes, total cholesterol levels well below 200 mg/dl are best.

What is the function of HDL?

HDL (high-density lipoprotein), or “good” cholesterol, absorbs cholesterol and carries it back to the liver. The liver then flushes it from the body. High levels of HDL cholesterol can lower your risk for heart disease and stroke.

What causes high LDL?

What makes LDL cholesterol too high? Diet: Diets high in saturated fats, salts, and cholesterol (as found in fatty meats, some processed foods, dairy, and cured meats) and low in healthy proteins (fish, nuts, avocados, and others) and fiber (such as leafy vegetables, and apples) can lead to high LDL.

What is normal HDL?

If your total cholesterol is high, you may have a higher risk for heart disease than a person with normal total cholesterol. Here is the adult range for HDL cholesterol: Normal: 45 to 70 mg/dL for men, 50 to 90 mg/dL for women.

Which is worse triglycerides or LDL?

LDL is known as the “bad” cholesterol because having too much LDL may cause a buildup of plaque in your blood vessels. Triglycerides are also a type of fat found in your blood. High triglycerides, low HDL, and/or high LDL numbers can increase your risk for heart attack and stroke.

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What if my HDL and LDL are both high?

The numbers to knowLDL (bad) cholesterolunder 100 mg/dLHDL (good) cholesterolover 60 mg/dLTriglyceridesunder 150 mg/dL

What happens if HDL cholesterol is low?

People with normal HDL cholesterol can have heart disease. And people with low HDL levels can have healthy hearts. Overall, though, people who have low HDL cholesterol will have greater risk of developing heart disease than people with high HDL levels.

What happens if LDL cholesterol is low?

Although the risks are rare, very low levels of LDL cholesterol may be associated with an increased risk of: Cancer. Hemorrhagic stroke. Depression.

Do eggs have LDL or HDL?

Summary Eggs consistently raise HDL (the “good”) cholesterol. For 70% of people, there is no increase in total or LDL cholesterol. Some people may experience a mild increase in a benign subtype of LDL.

What affects HDL cholesterol?

Lifestyle choices also affect HDL levels. Smoking, carrying too many pounds, and lack of physical activity tend to lower HDL. So does a diet high in refined carbohydrates (white bread, sugars, etc.). Medications such as beta blockers, anabolic steroids, progestins, and benzodiazepines can also depress HDL.

Why HDL is called good cholesterol?

High-density lipoprotein (HDL) cholesterol is known as the “good” cholesterol because it helps remove other forms of cholesterol from your bloodstream. Higher levels of HDL cholesterol are associated with a lower risk of heart disease.

What is the normal range for HDL and LDL?

Type of CholesterolHealthy LevelTotal Cholesterol125 to 200mg/dLNon-HDLLess than 130mg/dLLDLLess than 100mg/dLHDL40mg/dL or higher

Does walking raise HDL?

1. Walking raises your “good” cholesterol and lowers your “bad” cholesterol. A brisk 30-minute walk three times per week is enough to raise your “good” cholesterol (HDL) and lower your “bad” cholesterol (LDL) a few points. This amount of exercise, even without weight loss, is shown to improve your cholesterol levels.

What are the warning signs of high cholesterol?

  • Nausea.
  • Numbness.
  • Slurred speech.
  • Extreme fatigue.
  • Chest pain or angina.
  • Shortness of breath.
  • Numbness or coldness in extremities.
  • High blood pressure.

What is the most important cholesterol number?

HDL (“good” cholesterol) of 50 mg/dL or higher, if you’re a woman, or 40 mg/dL or higher, if you’re a man. Optimal LDL is 100 or lower, says Mosca. If you have other major risk factors, like pre-existing cardiovascular disease or diabetes, your doctor may want your LDL closer to 70.

What is the fastest way to lower LDL cholesterol?

  1. Reduce saturated fats. Saturated fats, found primarily in red meat and full-fat dairy products, raise your total cholesterol. …
  2. Eliminate trans fats. …
  3. Eat foods rich in omega-3 fatty acids. …
  4. Increase soluble fiber. …
  5. Add whey protein.

Does sugar raise LDL?

Eating sugar and other carbohydrates raises triglycerides and lowers HDL. It also causes dysfunctional alterations in LDL molecules. LDL levels may seem normal, but this dysfunctional LDL can cause rapid clogging of arteries and increased risk for thrombosis.

Does egg cause cholesterol?

Chicken eggs are an affordable source of protein and other nutrients. They’re also naturally high in cholesterol. But the cholesterol in eggs doesn’t seem to raise cholesterol levels the way other cholesterol-containing foods do, such as trans fats and saturated fats.

What are 3 functions of triglycerides?

Fat Functions Triglycerides, cholesterol and other essential fatty acids–the scientific term for fats the body can’t make on its own–store energy, insulate us and protect our vital organs. They act as messengers, helping proteins do their jobs.

What is worse high triglycerides or high cholesterol?

In fact, high triglycerides are as dangerous as bad cholesterol when it comes to your risk for heart disease. According to researchers at the Centers for Disease Control and Prevention (CDC), high triglycerides could be a problem for one-third of all Americans.

What should my cholesterol be for my age?

Age and sexTotal cholesterolHDL cholesterolAge and sexTotal cholesterolHDL cholesterolPeople aged 19 years and youngerTotal cholesterolLess than 120 mg/dLMen aged 20 years and olderTotal cholesterolLess than 130 mg/dLWomen aged 20 years and olderTotal cholesterolLess than 130 mg/dL

Is it better to have high HDL or low LDL?

When high cholesterol is good With LDL cholesterol, lower is better. HDL cholesterol helps remove LDL cholesterol from the blood and transports it to the liver for processing and elimination. A higher HDL number is desirable because it usually signals a lower risk of heart disease.

What happens if my HDL is too high?

Very high blood levels of HDL cholesterol may actually be bad for you. The research linked it to a higher risk for heart attack, and even death, among patients who already had heart problems or who faced a higher risk of developing heart disease.

Does High HDL cancel high LDL?

Myth 2: Having enough good cholesterol can offset bad cholesterol. It used to be thought that a large amount of good cholesterol would offset the impact of high bad cholesterol levels, but recent studies have shown this is not the case, according to Dr. Gillinov.

How can I increase my HDL naturally?

  1. Consume olive oil. …
  2. Follow a low carb or ketogenic diet. …
  3. Exercise regularly. …
  4. Add coconut oil to the diet. …
  5. Quit smoking. …
  6. Lose weight. …
  7. Choose purple produce. …
  8. Eat fatty fish often.

What supplements increase HDL?

Niacin, a B vitamin, has long been used to increase high-density lipoprotein (HDL) cholesterol — the “good” cholesterol that helps remove low-density lipoprotein (LDL), the “bad” cholesterol from your bloodstream.